##gff-version 3 Q7NWB7 UniProtKB Chain 1 357 . . . ID=PRO_0000210784;Note=Beta-hexosaminidase Q7NWB7 UniProtKB Active site 183 183 . . . Note=Proton donor/acceptor;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q7NWB7 UniProtKB Active site 254 254 . . . Note=Nucleophile;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q7NWB7 UniProtKB Binding site 66 66 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q7NWB7 UniProtKB Binding site 74 74 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q7NWB7 UniProtKB Binding site 140 140 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q7NWB7 UniProtKB Binding site 170 171 . . . Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364 Q7NWB7 UniProtKB Site 181 181 . . . Note=Important for catalytic activity;Ontology_term=ECO:0000255;evidence=ECO:0000255|HAMAP-Rule:MF_00364